Electric heater for automobile-radiators.



J. D. BROWDER.

ELECTRIC HEATER FOR AUTOMOBILE RADIATORS.

APPLICATION FILED DEC.20. i9!!- 1 ,285,01 3. Patented Nov. 19, 1918.

E3 vwem toz gyu. attoznu a UNITED STATES PATENT OFFICE.

JEWELL D. BROWDER, 51%, 0F CANADIAN, OKLAHOMA.

ELECTRIC HEATER FOR, AUTOMOBILE-RADIATORS.

Application filed December 20, 1917.

To all whom it may concern:

Be it known that I, JEWELL D. Bnowunn, J r., a citizen of the United States, residing at Canadian, in the county of Pittsburg, State of Oklahoma, have invented a new and useful Electric Heater for Automobile- Radiators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved electric heater for automobile radiators, and also for use in connection with elevated water storage tanks, and one of the objects of the invention is to provide a device of this kind eliminating the use of a non-freezing compound.

A further object of the invention is to provide a heater of this kind which avoids the drainage of the radiator, as when a nonfreezing compound is employed.

A further object of the invention is the provision of a heater, adapted for use on an automobile radiator, whereby a heated garage is unnecessary.

A further object of the invention is the provision of a heater that will render it much easier to start the motor in cold weather, owing to warm water circulating in the water jacket of the engine.

A further object of the invention is to provide a device of this kind which is entirely automatic, and which will require no regulating or adjusting after once installed.

A further object of the invention is to provide a heater that may be applied to any suitable elevated water storage tank, thereby avoiding the same freezing and the water pipes from bursting.

In practical fields the details of construction may necessitate alterations falling within the scope of what is claimed.

The invention comprises further features and combination of parts as hereinafter set forth shown in the drawings and claimed.

In the drawings, a single view is disclosed showing the features of the invention.

Referring more especially to the draw ings, 1 designates a heating element, which in the present instance consists of a resistance coil, and which may be applied to the radiator in such a manner as to. serve the best purpose in heating the radiator and the water therein. If desired the heater l may consist of more than one coil. Leads or Ipeeiflcation of Letters Patent.

Patented Nov. 19, 1918.

Serial No. 208,083.

Wires 2 and 3 are connected to the heater as shown at 4 and 5, and 6 denotes a relay. This relay consists of a base 7 on which is mounted a pair of electrical magnets 8 and 9, which are spaced apart as shown and pivotally mounted on the base as shown at 10 is an armature 11. An abutment pin 12 rises upwardly from the base, and a spring 13 is connected to the armature and shown at 14, and is in turn connected to a pin 15, whereby the armature is normally held against the abutment pin 12. The armature 11 is provided with a pair of contacts 16 and 17 and rising from the base 7 is a pair of contacts 18 and 19. A lead or wire 20 electrically connects the electromagnets 8 and 9, and 21 a thermostat which consists of a base 22 and a post 23 rising therefrom, and a blade member 24 mounted on the post. This blade or member has a terminal contact 25, while the base has a similar terminal contact 26. A second thermostat 27 is provided which consists of a base 28 and a post 29 rising therefrom. An angular arm 30 rises upwardly from one end of the base and is provided with an overhanging portion, in which a contact screw 31 is adjustably mounted. One end of this screw has a reduced portion 32 on which a thumb nut 33 is threaded. A blade or member 3a is carried by the post 29. A lead or wire 35 is connected to the blade or member 24; and the post 23 by the thumb nut 36 and is in turn connected to the contact 18. A wire or lead 37 is connected to the terminal contact 26, and in turn to the contact 19. A wire 38 makes a unction at 39 with the wire 37. Said wire 38 is in turn connected to the electromagnet 9. Connected to the electromagnet 8 is a wire or lead 40 and in turn is connected to the contact screw by the thumb nut 41. The wire 3 makes a junction A2 with the lead 40, and the lead 2 is connected to the pivoted end of the armature 11 by the binding screw 43. A wire A l makes a junction at A5 withthe wire or lead 35. Extending from the battery or other suitable source of current supply 46 (towhich the wire or lead 4% is connected) is a lead 47, which is in turn connected to the blade and the post 34 and 29 by the thumb nut l8. The thermostat 21 when installed is constructed or adjusted to operate at any desired temperature near the freezing point of water, say for instance 32 or 33 degrees Fan, and the thermostat 27 is likewise adjusted or constructed to operate under the boiling point of water, for examples 180 or 200 degrees F ah. When the thermostat 21 operates, the circuit is closed at points or contact 25 and 26, thereby closing the circuit of the relay 6 at the contacts 16, 17 1S and 19 by attracting the armature 11, also closing the circuit of the heating element. The heating element now being. in circuit with thesource of supply heats the Water in the radiator. Vi hen the temperature rises, the thermostat 21 will respond and open the circuit as at 25 and 26, but this Will not 1 v I s open elk? Gil cult of the relay 6, as or he relay is non inadet the batter e w x 4 J reclining atnioschere,

perature has -W J1EE; instance 123C or 206 d most-at 2 7 esponc'to the relay circuit 7 but since is open at e screw until the temper ing point, d

heating device to ant nia' be installed in direct circuit fi'ltll 1e storage battery, n s" aii automobiles, vated Water to an eles v, r 1 A ma oe ins oiled cuit with tl al commercial electrical supply or farm lighting plant. vi hen applied to an elevated Wa storage tanl: thermostats may operate between degrees F. as the Water that i from such tanl; would not be too 1 temperature, or other "-TGlClS Each of the blades eel strips antially the same length The contact of the blade Q-i o't t is thermostat 21 is, therei re, out of contact Wlilfl the contact A reduction to freezing temperature causes the blade 24 of the thermostat 21 to bend downwardly, by reason or" the brass strip 24. on the bottom contracting more than the steel strip 2i on the top. This freezing temperature also causes the brass strip 3 i on top of blade to contract, but the brass strip being on top in this instance causes the blade 3%- to curve upwardly and increase its contact with the screw U1. When the contacts 25 and 26 of the thermostat 21 cooperatively engage, urrent is supplied from the battery -16 to he blad of the thermostat 2? by the Wire 7, to the screw 31 over Wire the junction 2, magnets 8 and 9 over the wire 38 junc- Wire 37 to and through the contact 5 and :26, the blade 24%, the Wire 35 to the ction &5 wire as back to the battery 46.

magnets 8 aid 9 are then energized ijfifiiilllg its armature 11, whereby c coiniactsl8 and L E 1 over above me to the h the over the Wire "h n over the Wire 2, crud part passllll ing o 1 the then roost t etc; 16 "Ni the other over tiire 'n'o divisions 01 c .-:cnt -:cuniting at 'l-e junction 4-5 and passi o b i e battery 16 by the the heating c il increases the *o th blade bend upwardly cuts 595 and 26 separate, but the a e maintained energized, leaving coil 1 (part of over the Wire 37) wires 3'? 4A, and ets (which previously trierniostat 21) passes mire 3'1 armature 11 and from the l ting coil,

and to the battery continues until the blade 9 7, as a res lt of a rise s downwardly and away l the which will n open the *v 31, until second reiture results in a ropens. The in ntion having been set fortl.- What is clainiec a net us ful is T heating device for autot. heating element consistresistancc coil adjacent the radiator, electroinagnets and an i circuit with one end of electrical supply, a .7 with the supply and having electrical connections with electromagnets ti i nzalre the arms the relay adapted to operate responsive to a degree of temperature near that of freezing for closing the relay circuit, whereby the heating circuit is closed, said electrical supply being in circuit With the other end of the heating element, and a thermostat in said circuit between the supply and the heating element and having electrical connections with the electromagnets of the relay, whereby the 10 second thermostat operates at a degree of temperature below that of boiling of the Water in the radiator for opening the circuit between the supply and the heating element.

In testimony whereof I have signed my name to this specification in the presence of 15 two subscribing Witnesses.

JEWELL D. BROWDER, Jn. Witnesses:

Mrs. En. MELTON, E. W, MELTON. 

